LG Portable LED Projector($700) This tiny device (under five by five by three inches and weighing just over a pound) packs everything you’d want in a projector: built-in Wi-Fi, the ability to project up to a 125-inch screen, HDMI connection, and WXGA (1280 by 800) resolution. It can also mirror content from any Miracast-equipped device. Unfortunately, that seems to rule out iOS devices, at least for now.